Fazlur Rahman
At a glance
- Deep cleaning is billed per quadrant at $150-$300 in 2026 — $600-$1,200 for all four.
- A routine cleaning is $90-$250 and does not include below-gum work.
- Insurance covers scaling and root planing at 50% after your deductible, often capped at two quadrants a year.
- Spreading treatment over two or four visits costs the same but recovers far better.
Prices last verified October 2026. Costs vary by region and provider.
Routine cleaning versus deep cleaning
These are different procedures with different codes and very different prices, and patients are often quoted a 'cleaning' without knowing which one they are getting. A prophylaxis — the routine cleaning most people get every six months — removes plaque and supragingival tartar. It cannot reach below the gum line and it is usually covered at 80-100%.
Scaling and root planing is treatment for periodontitis. It removes hardened calculus from inside periodontal pockets, smooths the root surfaces so new deposits do not adhere as readily, and is usually performed with local anaesthetic over two or more appointments. It is 'major' care in every dental plan, which means 50% coinsurance after the deductible.
| Procedure | 2026 cost | Insurance tier | Coverage | What it treats |
|---|---|---|---|---|
| Routine cleaning (prophylaxis) | $90-$250 | Preventive | 80-100% | Plaque and tartar above the gum line |
| Scaling and root planing, per quadrant | $150-$300 | Major | 50% after deductible | Tartar and bacteria inside periodontal pockets |
| Full-mouth deep cleaning, four quadrants | $600-$1,200 | Major | 50%, capped at 1-2 quadrants/year | Established periodontitis |
| Periodontal maintenance | $120-$250 per visit | Major | Often 50%, no annual cap | Ongoing control after treatment |
| Gum surgery / flap procedure | $600-$2,500 per site | Major or surgical | 50% or less | Pockets too deep to clean non-surgically |
How deep cleaning is billed
The single most important thing to understand is that deep cleaning is billed per quadrant. A patient with two affected quadrants receives two units of scaling and root planing; a patient with four receives four. This means a chart showing pockets of 4mm or deeper in specific sites can cost dramatically less than a blanket full-mouth treatment — and that difference should be visible in your X-rays and probing chart.
Ask to see your periodontal charting. It records the depth of each pocket in millimetres at six points per tooth. 1-3mm is healthy, 4-5mm is early disease, 6mm+ is advanced and often not treatable with cleaning alone.
| Pocket depth | Classification | Typical treatment | Scaling alone sufficient? |
|---|---|---|---|
| 1-3 mm | Healthy | Preventive cleaning | Yes — no deep cleaning needed |
| 4-5 mm | Stage I gingivitis / early periodontitis | Scaling and root planing in affected quadrants | Usually yes |
| 6 mm | Stage II periodontitis | Scaling and root planing plus maintenance | Yes, with 3-month recall |
| 7-8 mm | Stage III periodontitis | Deep cleaning, often with surgery | Sometimes — surgery if it does not resolve |
| 9 mm+ | Stage IV, tooth likely lost | Extraction consideration | No — the tooth is usually not salvageable |
Spreading the cost without spreading the money
The total is the same whether you have one appointment or four. What changes is the experience. Full-mouth deep cleaning in a single 3-hour session is a common recommendation and a common source of regret — the gums are sore for days, eating is difficult, and several patients postpone the follow-up that determines whether the treatment worked.
Splitting into two halves (upper then lower) or into four quadrants costs nothing extra and often lets your dentist vary the anaesthetic and the intensity of the work. Ask whether the clinic charges a per-visit fee for the additional appointments — most do not, since scaling is billed per quadrant regardless of how many visits it takes.
What insurance actually pays
Three rules explain most of the surprise bills. First, scaling and root planing sits in the 'major' tier at 50%, not the 80% you pay for a preventive cleaning. Second, most plans cap periodontal treatment at one or two quadrants per calendar year, so four quadrants of deep cleaning in one year routinely leaves you paying out of pocket for two. Third, once you have used your annual maximum benefit, the plan pays nothing more.
The practical move is to sequence treatment across two calendar years if your budget is tight — treat the two worst quadrants this year, the remaining two next January. The clinical outcome is essentially identical and the total out-of-pocket cost can drop by several hundred dollars.
Home care that keeps the result
Deep cleaning works, but the pocket lining re-adheres within weeks if nothing changes. The intervention with the strongest evidence is interdental cleaning — not brushing harder, which mostly abrades enamel. Floss, interdental brushes sized to the pocket, or a water flosser for the areas your gums have receded from.
| Home measure | Evidence for reducing pockets | Realistic impact |
|---|---|---|
| Interdental brushes, correct size | Strong | The single most effective daily intervention for treated periodontitis |
| Daily brushing, twice | Moderate | Plaque control at the gum line; technique matters more than brand |
| Water flosser | Moderate | Useful for recession and post-surgical sites; pair with floss or brushes |
| Smoking cessation | Very strong | Smoking roughly doubles recurrence risk; the single biggest modifiable factor |
| Mouthwash, chlorhexidine | Short-term only | Use as prescribed after surgery; long-term use stains and alters taste |
Resources and next steps
Ask for your periodontal chart and the pocket depths before agreeing to a full-mouth quote. Confirm in advance whether your plan caps periodontal treatment at one or two quadrants per year, and if so, sequence treatment across two years. If you are diagnosed with deep cleaning, book the maintenance recall at the same time — a three-month interval is what keeps the result.
Photo: U.S. Air Force photo by Airman 1st Class Clara Karwacinski, PUBLIC DOMAIN, via Wikimedia Commons (https://upload.wikimedia.org/wikipedia/commons/6/6d/US_Navy_090611-F-5647K-005_LCpl_Carla_Thomas%2C_an_Antigua_and_Barbuda_defense_force_dental_hygienist_aboard_hospital_ship_USNS_Comfort_%28T-AH_20%29_cleans_and_scales_a_Colombian_patient%27s_teeth.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original)
